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8795149 |
Pneumatic or hydraulic cardiac assist devices
The embodiments relate to cardiac assist devices that comprise a jacket that wraps the exterior of the heart, where the jacket comprises one or more pneumatic or hydraulic bladders. The pneumatic... |
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8771164 |
Fluid pumping ventricular assist device and components with static seal
A ventricular assist device (VAD) having static seal structure for a pump housing which includes a support structure, a first sealing element, and a second sealing element. The support structure... |
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8702793 |
Implantable one-piece heart prosthesis
Disclosed is an implantable one-piece heart prosthesis having a driving artificial ventricle and a driven artificial ventricle. A main actuator is configured to transmit to the driving artificial... |
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8092365 |
Resonant multilayered impedance pump
A multilayered impedance pump is formed by an inner tube and an outer tube which have different mechanical characteristics. The outer tube is relatively stiff, and can be used for a structural... |
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7988614 |
Organ assist system and method
An organ assist system having a closed fluid system having a ring-shaped prosthetic contactively surrounding at least a portion of a body part, including bladders adapted for selectable dilation... |
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7841977 |
Devices and methods for absorbing, transferring and delivering heart energy
A device for altering cardiac performance includes an energy absorbing element which absorbs cardiac pumping energy from at least a portion of the heart. The energy may be delivered to another... |
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7585322 |
Cardiocirculatory aiding device
A cardiocirculatory aiding device is disclosed generally comprising a housing with a cavity, an inlet, an outlet, and first and second sides with apertures therein, first and second shells mounted... |
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7361137 |
Surgical procedures and devices for increasing cardiac output of the heart
Methods and devices for passively assisting the cardiac function of the heart are disclosed. A method of increasing the cardiac output of a heart includes providing a site of surgical access to... |
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7244224 |
Pump driving unit for driving a pump used for supporting or substitution of cardiac function
In a small sized pump driving unit, a fluid pump is used for driving the pump for supporting of substituting of cardiac function. The fluid pump can generate pressure fluctuations that can... |
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7217236 |
Universal pneumatic ventricular assist device
A pneumatic ventricular assist device (VAD) is disclosed for use in any circulatory support application including RVAD, LAVD, or BIVAD, trans-operative, short-term or long-term, tethered... |
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6945998 |
Corporal implantation device for assisting blood and heart ventricular circulation
A dual pusher-plate blood pump implanted into the body with either mechanical or biological valves (17) for unidirectional blood circulation through a circulation variable chamber (blood chamber)... |
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6770024 |
Implantable counterpulsation cardiac assist device
A hollow tubular element is inserted in the descending aorta. The caudad end contains a pressure sensitive passive or preferably, hydraulically or electrically activated, unidirectional valve. A... |
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6709383 |
Device for driving blood pumps
A blood pump driving device which is capable of making a blood pump 10 free from an unbalance between loads when sucking and discharging, respectively and which makes it possible to eliminate a... |
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6540659 |
Cardiac assistance systems having bi-directional pumping elements
A unified, non-blood contacting, implantable heart assist system surrounds the natural heart and provides circumferential contraction in synchrony with the heart's natural contractions. The... |
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6540658 |
Left-right flow control algorithm in a two chamber cardiac prosthesis
A biventricular cardiac prosthesis has a flow balance control system to balance blood flow through the left and right sides of the prosthesis to maintain a patient's left atrial pressure within... |
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6471633 |
Mechanical auxillary ventricle blood pump with reduced waist portion
An apparatus adapted to be inflated and deflated in response to selective communication with a source of pressurized fluid includes a bladder having a semi-rigid shell body portion and a... |
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6398715 |
Apparatus for assisting systolic and diastolic cardiac function
The present invention pertains to an apparatus for assisting a patient's heart operation. The apparatus comprises a mechanism for expanding and collapsing a right ventricle free wall of a heart of... |
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6254525 |
Cardiac assist system and method thereof
A cardiac assist system includes a sensor that is operative to sense the electrical activity of a patient's heart. The sensed electrical activity is processed to determine the onset of ventricular... |
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6238334 |
Method and apparatus for assisting a heart to pump blood
A ventricular cuff is designed to assist a heart to pump blood by applying uniform pressure to a majority portion of an exterior ventricular surface of the heart. A heart engaging structure is... |
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6206820 |
Device for supporting cardiac function having elastic filling chambers
A device for assisting the functioning of a heart has elastic filling chambers attached to an elastic cover which can be placed at least partially around the heart. The filling chambers can be... |
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6168624 |
Apparatus and methods for revascularization and perfusion
The invention is practiced by introducing a catheter (10)into the left ventricle of the heart. Deployment of an intraventricular pump assembly (12) from the end of catheter (10) is carried out by... |
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6001127 |
Annuloplasty ring holder
An annuloplasty ring and support assembly includes a ring support that has a peripheral wall with a peripheral shoulder surface, and a flange extending at generally right angles to the shoulder... |
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5971910 |
Method and apparatus for assisting a heart to pump blood by applying substantially uniform pressure to the ventricles
An apparatus and method for assisting a heart to pump blood includes a housing that defines an internal chamber for receiving a heart. The housing has a first opening to supply fluid to the... |
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5397349 |
Muscle and air powered LVAD
A method for providing ventricular assist to a patient with a weak or nonfunctional heart includes attaching an artificial ventricle to a patient and pumping said artificial ventricle with a... |
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5332403 |
LVAD with t-shape and unidirectional valve
A ventricular assist device comprises an artificial ventricle including a blood compartment, a pumping compartment and a pumping membrane separating the respective blood and pumping compartments.... |
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5300113 |
Cardiac ventricular assistance device particularly for compensating for weakened heart muscle function and for maintaining the vital body functions
A single cardiac ventricular assistance device intended to integrate the ctions of a ventricular assistance device (V.A.D.) proper and of an aortic balloon pump (IABP) includes a single energy... |
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5222980 |
Implantable heart-assist device
An implantable heart-assist device including extra-aortic balloon pump (EAB pump) for use in cooperation with a fluid pump is disclosed. The extra-aortic balloon pump includes a rigid, generally... |
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5192314 |
Synthetic intraventricular implants and method of inserting
A synthetic intraventricular implant device adapted to be surgically secured in a ventricle of the heart of a patient. The shape, size and volume of the device so inserted will depend on the size... |
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5139517 |
Orthotopic intraventricular heart pump
An intraventricular pump (IVP) is a surgically-implanted orthotoxic heart pump capable of augmenting either one or both of the heart's ventricles. The IVP pumps blood using an internal diaphragm... |
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5135539 |
Quick-connect, totally implantable cardiac prosthesis with floating membranes and removable sensitive elements
This invention relates to an implantable cardiac prosthesis constituted by a quick-connect, one-piece module comprising two ventricular chambers, rendered biocompatible, independent and activated... |
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5133744 |
Tubular-valued artificial heart
The artificial heart is designed for intrathoracic implantation, while its operation is effected by means of an extracorporeal control and energy feed system, form by a reduced console and... |
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5089016 |
Blood pump
A blood pump having a toroidal shaped chamber concentrically positioned around a cylindrically shaped hydraulic pump. The toroidal chamber has two toroidal shaped portions, one portion having a... |
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5089020 |
Monoseptal, bi-ventricular artificial heart
A total artificial heart, comprising a heart enclosure and an interior rigid septum attached at its periphery to the interior surface of the heart enclosure. This septum divides the heart into two... |
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5089018 |
Total heat prosthesis
Total heart prosthesis including a casing implantable in the pericardial cavity, the geometry of which is similar to that of the natural heart, with a motor device inside the casing which... |
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4981484 |
Modified elliptical artificial heart
An artificial heart device for producing heart pumping action as part of a total artificial heart implant comprising a housing of elongate configuration enclosing a pumping volume of sufficient... |
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4976729 |
Elliptical artificial heart
An artificial heart device for producing heart pumping action as part of a total artificial heart implant comprising a semi-rigid housing of approximate ellipsoidal configuration which encloses a... |
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4902291 |
Collapsible artificial ventricle and pumping shell
An artificial ventricle for use as part of a total artificial heart for implantation within a living being as part of its circulatory system. The ventricle includes a soft and flexible blood... |
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4863461 |
Artificial ventricle
An artificial ventricle for replacing the human heart and comprising a shell formed from an upper housing and a lower base. A plurality of thin-walled, flexible pumping diaphragm layers are... |
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4851002 |
Couplable heart assistance modules
The invention provides a prosthesis for mono or biventricular cardiac assistance implanted in the right hemi thorax between the diaphragm and the right lung. The prosthesis of the invention... |
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4846831 |
Manual back-up drive for artificial heart
A manual back-up emergency drive device for air driven artificial hearts, particularly for the "Jarvik-7" heart, is adapted to be instantly connected to the air drive lines for the heart in the... |
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4838889 |
Ventricular assist device and method of manufacture
A ventricular assist device and a method of manufacturing the ventricular assist device. The device is generally flat in shape and gently curved so that it may be comfortably implanted under the... |
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4781715 |
Cardiac prosthesis having integral blood pressure sensor
An integral blood pressure sensor for a cardiac prosthesis of the type having a fluid chamber and a blood chamber separated by a flexible diaphragm which is actuated by a drive fluid pulsatingly... |
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4704120 |
Heterotopic artificial heart consisting of a one-piece cardiac prosthesis for biventricular assistance and implantable in the right hemithorax
A one-piece prosthesis for biventricular cardiac assistance and reanimation is implanted in the right hemithorax between the diaphragm and the right lung symmetrically with respect to a diseased... |
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4588404 |
Total cardiac prosthesis
The invention prosthesis is formed by a biventricular monoblock unit which comprises a sealed case implantable in the pericardial cavity. The actuating device is formed by two membranes working... |
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4578077 |
Blood pump applicable to an artifical heart
A blood pump to be utilized as an artificial heart, comprises a housing provided with a port for introducing and discharging fluid, a cover portion for closing the housing tightly, a sac portion... |
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4576606 |
Implantable blood pump
Inside a flexible shell (10), a deformable pocket (20) is connected to blood circulation via an inlet valve (30) and an outlet valve (40). The pocket is compressed by a floating assembly... |
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4536893 |
Implant device for substaining the activity of the myocardium
The device comprises a container housing for enveloping, at least partially, the ventricular region of the myocardium. To the inner surface of the container housing are applied membrane means... |
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4389737 |
Hydraulically actuated cardiac prosthesis with three-way ventricular valving
A cardiac prosthesis having a hydraulically actuated compressible blood pump. An actuation chamber adjacent the blood pump receives hydraulic actuation fluid from an actuator pump through a... |
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4376312 |
Hydraulically actuated cardiac prosthesis
A cardiac prosthesis having a hydraulically actuated compressible blood pump. An actuation chamber adjacent the blood pump receives pulses of hydraulic actuation fluid from an actuator pump... |
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4222127 |
Blood pump and method of pumping blood
A blood pump for implant or paracorporeal use having a rigid case with inlet and outlet valves defining a pumping cavity; an integral thin walled flexible sac freely confined within a pumping... |